{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x3fc7631b19f618fb31f1ee01ff3a15d33a9264186873e5f95dfa101b8aedbb47",
    "signature": "0xb6e55398a8c39075e4ffce3da78c5c1b9428cf83df2300273b14b038f8e11c3c0d40453e69680f9cca08f6618ae82bec380282e46cfe6bc5dbbd887084aaa0df1c",
    "signer": "0x315b4c0649DA67E0455b52B05eA7Bc3256DEe4D0",
    "userId": "591639806"
  }
}